Conveying-link construction.



' PatentedSept. 21, 1915.

C #244 (MW W. T. HURST.

CONVEYING LINK CONSTRUCTION.

APPLlCATlON FILED MARJZO; I915.

WILLIS T. HURST,'OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR TO PITTSBURGH COAL \VASHER, COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF PENN- SYLVANIA.

CONVEYING-LINK CONSTRUCTION.

ie it known that I, \Vrrms T. HURs'r, a citizen of the United States, residing at Pittsburgh, in the county of Allegheny and b'tate of Pennsylvania, have invented certain new and useful Improvements .in Conveying-Link Construction, of which the following is a specification.

My invention relates to improvements in link construction for conveyers, and is particularly adapted to provide an improved link mechanism for supporting the ends of -cated at 3, whereby to provide such overlapthe molds of pig casting machines. In such mechanism, the molds, of desired form and capacity, are usually mounted by their end portions upon the supporting carrying chains, one at each side.

The present invention has for its object to provide a chain construction composed of twin links mounted upon supporting rollers and connected by pivoting pins, the links having supplemental bridge pieces loosely mounted between the links, and having a laterally extending supporting lug for connection with the end of the mold, as more fully hereinafter described.

Referring to the drawings, Figure 1 shows in plan view a pair of links connected with adjacent links, and provided with the supporting bridge piece. Fig. 2 is a View of the construction of Fig. 1 in side elevation. Fig.

3 is a cross sectional View, taken on the line III. III. of Fig. 2. Figi is a perspective detail view, showing the mounting of the bridge piece. v

The links 2 are arranged in pairs side by side, one end extending straight in one direction and overlapping the connecting end portion of the next pair of links, the other end being inwardly -off-set, as indiping of the straight portion of the nextf adjacent link, as will be readily understood, whereby to provide a continuous chain structure. The straight portion of the link 2 is provided on its outer side With vertically arranged lugs 4: adapted to retain the squared head 5 of the connectin bolt 6, upon which the supporting "wheel is rotatably mounted. The other end of the bolt is retained in place by a cotter pin 8 or other suitable retaining device, the lugs 4: also embracing the head 5 of the bolt and assisting in holding the bolt non-rotatably in. place. The links as thus made are thus Specification of Letters Patent.

Patented Sept.'21, 1915.

Application filed March 20, 1915. Serial No. 15,848.

capable of being assembled in pairs without the necessity of having special right and left side members, it being merely necessary to reverse one of the links in position to provide a companion link for each pair, and to make a continuous chain of any desired lengthr Each link is provided at its middle portion with a longitudinal slot 9 adapted to receive the lugs 10, extending outwardly from the inside of the chain, from the downwardly extending arms 11 of the bridge member 12. Said bridge member extends laterally at one side beyond arm 11, providmg the attaching lip 13 having one or more bolt holes 14:, for connection by bolt or bolts 15 with the terminal lug '16 of mold 17. The bridge member being of one integral piece of metal, is mounted between the links 2 by the outwardly extending lugs 10 with a fairly loose fit, and the ings them,- selves preferably extend slightly beyond the other face of the links, whereby to provide for an ample range of movement, either by the links laterally, or by the bridge member in any direction, under the strains of expansion or contraction, while at the same time maintaining the bridge member in substantially fixed relation to the link members.

It will be understood that the mold, beinging any resulting -unequa1 Wear.

The construction and operation of the invention will be readily understood and appreciated by all those familiar with this class of machinery. It is extremely simple, highly eflicient, continuously serviceable, and capable of being renewed in case of wear or breakage without the necessity of cutting any rivets, bolts, or other parts.

The invention may be variously changed or modified in difi'erent features of detail construction by the skilled mechanic Without departing from the scope of the following claims.

. What I claim is:

1. The combination with a pair of longi- I porting bridge member having laterally extending lugsengaging said slots.

2. The combination with a pair of longitudinally slotted links, of a supporting bridge member,provided with a lateral integral supporting attachment and having laterally extending lags engaging said slots.

3. The combination 'with a pair of separated links of the type disclosed, each having a longitudinal slot at its middle portion,

of an intervening bridge member having an upper supporting and attaching body por tion proi'ided with downwardly extending iii-ins having engaging said slots.

laterally projecting portions" i. The combination with a pair of separated links of the type disclosed, each having a longitudinal slot at its middle portion, of an intervening bridge member having an uppersupporting and attaching body portion provided with downwmdly extending' arms having laterally projecting portions engaging said slots and a lateral apertured extension of said lyod'yflportitin.

in testiinon} whereof I hereunto aliix my signature in the presence of two witnesses.

WILLIS T. I'IURST,

ivitnesses L M. CLARKE, xi-A. Hnoxnzax. 

